Improvement in spark-extinguishers



C. REIMANN. 2 SheetsSheet I.

Spark-Extinguisher.

= Ill-"Hi ted Aug. 6, 1878.

Ifibzesses ggfm {few N. PETERS. FHOTO-LITHOGRAPHER, WASHINGTON. D C.

2 Sheets--Sheet 2.

0. REI MANN. Spark-Extinguisher.

No. 206,828. Patented Aug. 6,1878.

Wibwsse's A W Wam WM a0 UNITED STATES PATENT OFFICE.

CARL REIMANN, OF VVITTENBERGE, ASSIGNOR TO CONRAD LOUIS STRUBE, OFBUCHAU, NORTH GERMANY.

IMPROVEMENT IN SPARK-EXTINGUISHERS.

Specification forming part of Letters Patent No. 206,828, dated August6, 1878; application filed June 8, 1878; patented in Germany, February20, 1878.

To all whom it may concern:

Be it known that I, CARL REIMANN, of Wittenberge, North Germany, haveinvented an Improved Spark-Extinguisher for Locomotive, Portable,Traction, and other Engines, of which the following is a specification:

This invention relates to spark extinguishers or arresters oflocomotive, portable, traction, and other engines, in which theexhauststeam is allowed to escape by the smoke-stack or chimney, and inwhich a cone and spiral blades are used to deflect the sparks andincandescent particles of fuel escaping by the chimney.

The invention consists in certain novel e011- structions andcombinations of parts, includin g an inverted cone arranged over theblast-pipe, which passes the exhaust-steam from the engine to thechimney, said cone serving to produce a lateral deflection of saidsteam; an auxiliary steam-supply pipe projecting upward through saidcone; the smoke box or chamber of the furnace of the engine; the chimneyor chimney-tube; a conical jacket surrounding the chimney, and formed inpart of a top or partial cover having an escape-opening in its center;and spiral blades, preferably of a diminishin g pitch in an upwarddirection within the chimney, and extending above it to or toward thetop or partial upper cover of the jacket. By this combination the sparksor incandescent particles of fuel escaping by the chimney are perfectlyarrested and deposited within the jacket without interfering with thedraft, which is perfectly insured.

In the accompanying drawings, Figure 1 is a vertical section of myimproved spark-extin guisher. Fig; 2 is a partial front elevation of thesame. Fig. 3 is a plan or top view of the spark-extinguisher.

A A is the smoke-box, rising from which is the chimney l3, fittedexternally,with an invert ed conical jacket, C, which jacket ispartially closed at top by a cover, C, a central opening being madetherein to provide for the updraft. This opening is about the samediameter as the cylindrical tube B, which constitutes the chimney, andbetween the top of the chimney and the cover 0 is a free space, for thepurpose to be presently explained. D is the blastpipe, having itssteam-exit opening at D. In the center of this opening is an auxiliarysteampipe, E, for conducting a small jet of steam into the center of thechimney above the blastpipe. Fitted to the upper part of this steanrpipe is an inverted cone, F, which serves to deflect laterally the steamas it issues from the blast-pipe.

To the inner periphery of the chimney B is fitted a series of spiralblades, G G, by preference four in number, of a breadth about equal tothe space between the chimney and the largest diameter of the invertedcone F. These blades extend upward to the cover C, and are made fastthereto. They are so arranged as to constitute, with the cylinder B, thespiral ways before mentioned, their pitch varying from end to end, sothat while ofi'ering little or no obstruction to the passage of theascending gases on entering the spiral ways, they will guide anyparticles of incandescent fuel rising therewith into the conical jacketC, the gases escaping with the steam through the central opening in thecover.

The action of this apparatus may be described as follows: The steamescaping from the orifice l) of the blast-pipe takes a conical course byreason of the interposition of the cone F. The heated gases sucked upfrom the smoke-chamber by this current of steam surround the same, andmove in the direction of the current of steam. The spiral ways, however,intersect the space occupied by the heated gases from the furnace, andthe heated gases are consequently compelled to pass through the chimneyin spiral lines. By means of this spiral movement a centrifugal forcewill be imparted to the sparks, whereby they acquire a tendency to flyoutward. As above the inner tube there is nothing to interfere with thistendency, the sparks fly against the outer jacket, (or against thecover,) and are thus thrown down, and are prevented from escaping withthe steam and gases from the chimney.

Having now set forth the nature of my invention, I wish it to beunderstood that I claim 1. The combination, with the chimney-tube B andthe jacket C C, of the spiral blades G G, having a diminishing pitch inan upward direction, and arranged around the interior of the(]lllllll0)-tllb(, but Stopping short of the center of said tube,whereby a elear passage is left up through the center of the latter,substantially as specified.

2. The combination, with the blast-pipe I) l), of the inverted cone F,the chimney-tube I having spiral blades arranged up through it aroundits interior, and the jacket inclosing said chimney-tube, essentially asdescribed.

3. The combination of the inverted cone F with the auxiliary steam-pipe1' the blast-pipe

